Alert archive / Florida / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 28, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at May 17, 2012, 7:16 PM EDT for Palm Beach County, Florida. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 17, 2012, 7:16 PM EDT (23:16 UTC)
- Expired
- May 17, 2012, 8:00 PM EDT
- In force
- 44 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 135 km from the middle of the area, began a volume at 23:18 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 11.3 hours before the alert went out and 111 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 498 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
697
WUUS52 KMFL 172316
SVRMFL
FLC099-180000-
/O.NEW.KMFL.SV.W.0028.120517T2316Z-120518T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
716 PM EDT THU MAY 17 2012
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN PALM BEACH COUNTY IN SOUTH FLORIDA.
* UNTIL 800 PM EDT
* AT 714 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
NORTH COUNTY AIRPORT...AND MOVING EAST AT 30 MPH.
* THE STORM WILL AFFECT...
NORTH COUNTY AIRPORT...
PALM BEACH GARDENS...
NORTH PALM BEACH...
WEST PALM BEACH...
AND SURROUNDING COMMUNITIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND
OR LARGE HAIL. FREQUENT TO EXCESSIVE LIGHTNING AND HEAVY RAINFALL IS
ALSO POSSIBLE. IF THE STORM APPROACHES YOUR LOCATION, SEEK SHELTER IN
AN ENCLOSED BUILDING ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS.
SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.
&&
LAT...LON 2677 8039 2694 8032 2693 8006 2680 8003
2667 8003
TIME...MOT...LOC 2316Z 279DEG 25KT 2685 8025
$$
MJB2 follow-up statements
785
WWUS52 KMFL 172341
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
741 PM EDT THU MAY 17 2012
FLC099-180000-
/O.CON.KMFL.SV.W.0028.000000T0000Z-120518T0000Z/
PALM BEACH FL-
741 PM EDT THU MAY 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHEASTERN PALM BEACH COUNTY...
AT 737 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR PALM BEACH GARDENS...MOVING EAST AT 20 MPH.
SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 58
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
LAT...LON 2676 8035 2694 8026 2693 8006 2680 8003
2667 8003
TIME...MOT...LOC 2340Z 282DEG 19KT 2682 8012
$$
MJB432
WWUS52 KMFL 172358
SVSMFL
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
758 PM EDT THU MAY 17 2012
FLC099-180006-
/O.EXP.KMFL.SV.W.0028.000000T0000Z-120518T0000Z/
PALM BEACH FL-
758 PM EDT THU MAY 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PALM BEACH COUNTY
WILL EXPIRE AT 800 PM EDT...
NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS
DISSIPATED. THUS THE THUNDERSTORM WARNING WILL EXPIRE AT 800 PM EDT.
HOWEVER, STRONG GUSTY WINDS OF 40 TO 50 MPH, SMALL HAIL, AND HEAVY
DOWNPOURS ARE STILL POSSIBLE WITH THIS STORM OVER NORTHEASTERN PORTIONS
OF PALM BEACH COUNTY.
LAT...LON 2676 8035 2694 8026 2693 8006 2680 8003
2667 8003
TIME...MOT...LOC 2356Z 282DEG 19KT 2680 8003
$$
MJBThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 3:54 AM EDT | Special Weather Statement | MFL | Broward | 36 min |
| May 17, 6:02 AM EDT | Special Marine Warning | MFL | 58 min | |
| May 17, 7:11 AM EDT | Special Marine Warning | MFL | 2 hr | |
| May 17, 3:32 PM EDT | Special Weather Statement | MFL | Glades | 43 min |
| May 17, 3:44 PM EDT | Special Weather Statement | MFL | Broward | 31 min |
| May 17, 4:08 PM EDT | Special Weather Statement | MFL | Broward | 37 min |
| May 17, 4:15 PM EDT | Special Marine Warning | MFL | 60 min | |
| May 17, 4:23 PM EDT | Special Weather Statement | MFL | Glades | 37 min |
| May 17, 5:14 PM EDT | Special Marine Warning | MFL | 61 min | |
| May 17, 6:10 PM EDT | Special Weather Statement | MFL | Palm Beach | 35 min |
| May 17, 6:17 PM EDT | Special Marine Warning | MFL | 58 min | |
| May 17, 6:57 PM EDT | Special Weather Statement | MFL | Martin | 48 min |
| May 17, 7:50 PM EDT | Special Marine Warning | MFL | 55 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.